2021湖南名校学术联盟巻答案

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25.B【解析】激素一经靶细胞接受并起作用后就被灭活了,保证内分泌腺源源不断产生新激素,维持激素含量稳定,A、C正确;内分泌腺产生的激素直接进入血液,随血液流到全身,B错误;激素作用于靶细胞,调节靶细胞代谢,不组成细胞的结构,又不提供能量,也不起催化作用,D正确。

One possible versionThen I wondered whether the man would still be at the same spot. I walked out the doorand back to the street where I had met him. There the man was, at the same spot, knees curledup against his chest, with the same cardboard sign shading his head. I walked down the street,and before I could think twice, I stood before him. He cautiously glanced in my direction.Ismiled and held up the lunch bag. "I brought you some lunch, "I saidI handed him the bag, and he looked closely at it. " Thank you for this. I was praying thismorning, asking for someone,s heart to open. We talked for a little while. As he shared hisstory, there was an, open, honest tone in his voice. There was something about giving thatmade me feel like I was talking with a brother. "I hope you have a nice day, "I told him<"Thank you! It's already gotten a lot better, " he said. As I walked by, his thank fulness hadbecome mind. My day, too, had already gotten a lot better. Anything helps, indeed